Opacity Helper

Eevee Opacity Panel
Easily change the opacity settings of multiple selected objects in Eevee at once.

Description

This add-on allows you to select multiple objects and update their material Blend Mode simultaneously, saving time and effort. No need to adjust materials individually; simply apply the desired setting to all selected meshes with active materials.

What's New (v2.2.0)

• Updated for Blender 4.3 compatibility.
• Removed outdated Blend Mode options (MULTIPLY and ADD) that are no longer supported.
• Renamed modes to reflect Blender's current terminology:
  • Alpha Blended (formerly Alpha Blend).
  • Alpha Dithered (formerly Alpha Hashed).
• Changes are now applied only to mesh objects with active materials, ignoring unsupported objects like bones or meshes without materials.
• Simplified and clarified UI in the toolbar for ease of use.

Acknowledgements

Special thanks to the original author, CDMJ, for creating this add-on and sharing it with the Blender community. This update preserves the functionality and intent of the original script while ensuring it works seamlessly with the latest Blender features.

https://github.com/artistCDMJ/opacity_helper/tree/master

Installation

1. Download as zip.
2. In Blender, go to Edit > Preferences > Add-ons.
3. Click Install... and select the zip file.
4. Enable the "Eevee Opacity Panel" add-on.
5. Find the panel in the 3D View > Tool Shelf > Misc Tab > Opacity Helper.

Enjoy faster material adjustments in Eevee!